Layer config updates

[kusumachalasani]

Description

Update the layer configs. This PR fixes

• memoryRequest tunable bounds format
• rename openj9 to semeru

Fixes # (issue)

Type of change

• Bug fix
• New feature
• Docs update
• Breaking change (What changes might users need to make in their application due to this PR?)
• Requires DB changes

Summary by Sourcery

Update container layer configuration and add a new Semeru JVM layer definition.

New Features:

• Introduce a Semeru JVM layer configuration with heap presence detection queries and GC tuning options.

Bug Fixes:

• Correct memoryRequest tunable bounds format by removing unit suffixes from upper and lower bounds.

[sourcery-ai]

Reviewer's Guide

Updates autotune layer configurations by fixing memory request bounds format in the container config and introducing a new Semeru JVM layer (renaming from OpenJ9) with Prometheus-based presence detection and GC-related tunables.

Class diagram for updated KruizeLayer configurations

classDiagram
    class KruizeLayer {
      string apiVersion
      string kind
      string metadata_name
      string layer_name
      int layer_level
      string details
    }

    class LayerPresenceQuery {
      string datasource
      string query
      string key
    }

    class Tunable {
      string name
      string description
      string value_type
      string lower_bound
      string upper_bound
      int step
      string[] choices
    }

    class ContainerLayer {
      string layer_name
      string tunable_memoryRequest_upper_bound
      string tunable_memoryRequest_lower_bound
      int tunable_memoryRequest_step
    }

    class SemeruLayer {
      string layer_name
      string[] heap_memory_queries
      string tunable_GCPolicy_value_type
      string[] tunable_GCPolicy_choices
      string tunable_MaxRAMPercentage_value_type
      string tunable_MaxRAMPercentage_lower_bound
      string tunable_MaxRAMPercentage_upper_bound
      int tunable_MaxRAMPercentage_step
    }

    KruizeLayer "1" *-- "many" LayerPresenceQuery
    KruizeLayer "1" *-- "many" Tunable

    ContainerLayer --|> KruizeLayer
    SemeruLayer --|> KruizeLayer

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File-Level Changes

Change	Details	Files
Normalize memoryRequest tunable bounds format in the container layer config.	Change memoryRequest upper_bound from a MiB-suffixed string to a plain numeric value Change memoryRequest lower_bound from a MiB-suffixed string to a plain numeric value Add an inline comment clarifying that memoryRequest is expressed in MiB	manifests/autotune/layers/container-config.yaml manifests/autotune/layers/container-config.json
Introduce Semeru JVM layer configuration to replace the previous OpenJ9 layer.	Add a new semeru layer definition with layer metadata and description Configure layer presence using multiple Prometheus queries on JVM heap memory metrics with different id patterns Define GCPolicy tunable as categorical with supported Semeru GC policies Define MaxRAMPercentage tunable as an integer with bounds and step for Semeru memory tuning Add placeholder JSON config file for the Semeru actuator config	manifests/autotune/layers/semeru-actuator-config.yaml manifests/autotune/layers/semeru-actuator-config.json

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[sourcery-ai]

Hey - I've left some high level feedback:

• Now that memoryRequest bounds are unitless values, double‑check that all consumers of this layer treat them as MiB and consider standardizing how units are represented for tunables to avoid ambiguity.
• The semeru layer layer_presence section has several overlapping Prometheus queries for heap (e.g., tenured-.+ and tenured); consider consolidating these with a single, clearer regex to reduce redundancy and simplify maintenance.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Now that `memoryRequest` bounds are unitless values, double‑check that all consumers of this layer treat them as MiB and consider standardizing how units are represented for tunables to avoid ambiguity.
- The `semeru` layer `layer_presence` section has several overlapping Prometheus queries for heap (e.g., `tenured-.+` and `tenured`); consider consolidating these with a single, clearer regex to reduce redundancy and simplify maintenance.

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